Rhombodinium spinula
From dinoflaj3
spinula (Bujak, 1979, p.313, pl.2, figs.3–9; text-fig.8E) Williams et al., 2015, p.311. Holotype: Bujak, 1979, pl.2, figs.3–5; Bujak et al., 1980, pl.15, fig.6. Originally Gochtodinium, subsequently Wetzeliella, thirdly (and now) Rhombodinium. N.I.A. Age: middle Eocene (see Aubry, 1986).
Parent: Rhombodinium